Abstract

We address vortex solitons supported by optical lattices featuring modulation of both the linear and nonlinear refractive indices. We find that when the modulation is out of phase the competition between both effects results in remarkable shape transformations of the solitons that profoundly affect their properties and stability. Nonlinear refractive index modulation is found to impose restrictions on the maximal power of off-site solitons, which are shown to be stable only below a maximum nonlinearity modulation depth.

© 2008 Optical Society of America

Soliton modes, stability, and drift in optical lattices with spatially modulated nonlinearity

Yaroslav V. Kartashov, Victor A. Vysloukh, and Lluis Torner
Opt. Lett. 33(15) 1747-1749 (2008)

Vortex solitons produced in spatially modulated linear and nonlinear refractive index waveguides

Si-Liu Xu, Milivoj R. Belić, Dong-Ping Cai, Li Xue, Jun-Rong He, and Jiaxi Cheng
J. Opt. Soc. Am. B 35(2) 410-416 (2018)

Surface solitons at interfaces of arrays with spatially modulated nonlinearity

Y. V. Kartashov, V. A. Vysloukh, A. Szameit, F. Dreisow, M. Heinrich, S. Nolte, A. Tünnermann, T. Pertsch, and L. Torner
Opt. Lett. 33(10) 1120-1122 (2008)

Power-dependent shaping of solitons in parity time symmetric potentials with spatially modulated nonlinearity

Yunji Meng and Youwen Liu
J. Opt. Soc. Am. B 30(5) 1148-1153 (2013)

Surface vortex solitons

Yaroslav V. Kartashov, Alexey A. Egorov, Victor A. Vysloukh, and Lluis Torner
Opt. Express 14(9) 4049-4057 (2006)